Method of color halftoning using space filling curves

Details Method of color halftoning using space filling curves Method of color halftoning using space filling curves

1997-02-10

1999-01-05

Coles, Sr., Edward L.

Image analysis

Color image processing

382266, 382316, 358534, 358536, 358298, 358456, G06K 900, G06K 940, G06K 930, H04N 146

Patent

active

058554335

ABSTRACT:
A method of color halftoning using stochastic screening includes clustering, performing error diffusion and applying an adaptive criteria to change the cluster size according to the variation of the image color values. The method incorporates features from the traditional amplitude modulated (AM) digital halftoning methods, along with the advantages of frequency modulated (FM) techniques, recently introduced into the raster image processors of high resolution phototypesetters.

REFERENCES:
patent: 4884080 (1989-11-01), Hirahara et al.
patent: 5099259 (1992-03-01), Hirahara et al.
patent: 5276535 (1994-01-01), Levien
patent: 5321525 (1994-06-01), Hains
patent: 5602943 (1997-02-01), Velho et al.

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